Pressure water-filter.



No. 673,597. Patented May 7, |901. C. DIEHL. PREss'uRE wVATER FILTER. (Application led Mar. 6, 1899. Renewed Feb. 15, 1901.)

(Ilo Model.)

UNITED 'STATES PATENT OFFICE.

CHARLES DIEI-IL, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO HENRY H. NETTER, OF SAME PLACE.

PRESSURE WATER-FILTER.

SPECIFICATION forming part of Letters Patent N o. 673,597, dated May '7, 1901.

Application filed March 6, 1899. Renewed February 15, 1901. Serial No. 47,484. (No model.)

To all whom, it may con/cern.-

Be it known that I, CHARLES DIEHL, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Improvement in Pressure Water-Filters, of which the following is a specification.

l My invention relates to a new and useful improvement in pressure waterlters, and has for one object to provide a simple and effective apparatus of this description which will permit a continuous and steady flow of water and at the same time entirely remove all impurities therefrom.

A further object of my invention is to provide ready means for cleaning the filter of the -accumulations of foreign matter without disconnecting or opening the same; and the principal object of my invention is to provide a relatively large filtering-surface in order that water under pressure will not be unduly forced in passing therethrough, thereby lnore effectually removing the impurities from the water, while permitting an ample supply to pass through the filtering material; and a still further object of my invention is to provide means for removing the principal foreign matter held in mechanical suspension before the water reaches the ltering material, thus largely avoiding the clogging of said filtering material.

With these ends-in View this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In-order that those skilledin the art to which this invention appertains may understand how to make and use the same, the construction and operation will now be described in detail, referring to the accompanying drawings, forming a part of this specification, in which- Figure l is a perspective of a filter made in accordance with my improvement, and Fig. 2 a cross-section showing the interior construction thereof.

In carrying out my invention as here embodied, A represents the casing, which may be of any suitable material, preferably of wood, and I prefer that this casing be rectangular in shape, as shown. The interior of the casing is divided into compartments by the partitions B, C, and D, the partition B being solid and so fitting within the casing as to permit the passage of water only at the point E, where it does not quite reach the top of the casing, thus forming a narrow opening throughout the length of the filter.

The inlet-pipe E leads to the compartment G and projects downward therein to about half the height of said compartment, so that when water fiows through this pipe and fills I(his compartment it will flow through the narrow opening E into the compartment H. This action will cause any mud or other heavy foreign matter which may be suspended in the water to settle at the bottom of the compartment G, while the water freed therefrom passes, as just described, to the compartment H. The partitions C and D are perforated or of wire-netting and have closed therebetween the filtering material I, which I prefer .shall be a prepared paper, as hereinafter described, and as this material extends throughout the length and height of the casing an exceedingly large surface is exposed to the waterin the compartment H, thereby permitting said Water to percolate through this material -without undue haste in reaching the compartment J, while at the same time a sufficient quantity of water will pass through this large surface to permit a full and steady supply to fiow from the faucet K when the latter is opened. This is an important feature,

since when the water is crowded through a -small filtering-surface the surface soon becomes clogged and the flow to that extent is cut O, so that the point at which the filtered IOO through theA filtering material, as this compartment J will act as a storage-reservoir.

The pipe L, of relatively large size, is connected with the bottom of the compartment G and has therein a stop-cock M, so that the foreign matter-such as mud, which tends to settle at the bottom of the compartment G- will pass into this pipe and there remain until the stop-cock M is opened, when it will be blown therefrom. Likewise a pipe N is connected with the bottom of the compartment H and has a stop-cock O therein for a similar purpose. By this arrangement when` it is desired to clean the apparatus of the accumulated impurities this may be readily done by opening first the stop-cock M, as just/described, permitting the full water-supplyentering through the pipe F to pass downward through the compartment Gand the pipeL and flow into av sink or other receptacle to which the pipe L leads. After the compartment G has been thus. cleansed the compartment H will likewise be cleansed by the opening of the stop-cock O, which will cause the full water-supply t0 dow through the pipe N, and as the pipe N is of larger capacity than the inlet-pipe F` all of the water stored within the compartment H will be withdrawn therefrom, and thereafter the supply flowing fromthe compartment Gto the compartment H Will do so in the form of a thin sheet of water caused by passing through the narrow opening E, and. this sheet of Water will be projected against the inner surface of the ltering material Iand the partition C, and thereby WashA E therefrom any impurities which may.- have lodged thereon, causing them to pass off through the pipe N. During this process of cleansing theV filtered water contained in the compartment .I willl percolate backward through the filteringy material on account of the water-pressure being removed from the inner surface of said material, and. this {iowing ofthe ltered water reversely throughthe:

so removed the partitions may be'then with-` drawn from the casing, thus leaving-an open space,whichfmay be readily scrubbed or otherwise cleanedwhen occa-sion requires, the partitions being-set in grooves, so asto be readily' removed'and replaced.

For convenienceV in controlling the watersupply a valve Pis located in theI pipe F justl outside of the casing.

- Thefiltering agent I prefer to make offrwhat is known as filtering-paper by boilingthel same until disintegrated into pulp formland then molding this pulp in a rectangular mold, in the bottom of which is placed the partition Gand asthis'part'ition is preferably made of heavy wire-netting ofv coarse mesh the ltering materialwill in its plastic form Aembed itself in these meshes, so that when it is placed within the casing and the partition D brought to bear thereagainst any tendency upon the part of the material to move downward will be prevented.

A threaded rod Q, is run through the front of the casing and bears againstthe bracestrips R, which in turn bear against the partition D, andthus permit pressure to be exerted upon the filtering material by the manipulation of the threaded rod. rlhe result of this is that the density of the filtering material may be regulated by varying this pressure, and thus the filter made to work more or less rapidly. Another advantage of this arrangement is that sufcient pressure may be brought to bear upon the filtering material by the manipulation of the threaded rod -to forcea portion-thereof through the meshes of the partition C. Thus by removing the with the original formationof this. material.'

In practice I prefer t6` make the casing of hard Wood,'the inner surface thereof being :enameled or otherwise treated, so as to pre- Jventl the. absorption ofthe water.

Having. thnsfully described my'invention, fw-hatI claim as. new and usefulisl-. A water-filter.consisting of ay rectangular casing, partitiouslocated- Within saidcas- :ing so as to divide it. into compartments,a fsuitable liltering` agent located between two =of said partitions, thezlatt'er being perforated, a'supply-pipev leading to therear compartfment whereby'water is admitted thereto-and .permitted to flow to thev next compartment :through a narrow spaceover theftop of the partition, blow-cliff pipes leading from the two ;rear compartments, and; a faucet connected with the front compartment for withdrawing the filtered water therefrom, as speciiied.

2. A water-filter consisting of arectangu- .lar casing, a partitionB ittedtherein so as to form the compartment G, saidl partition 4:extending within1` close. proximity tobut not in'contact withY the-top of thecasing, so 'as to form a narrow opening at this: point for the .flow of-l water from thecompartment G, aper- 'forated partition C so locatedlas to form the l:compartment H inconnection with therstnamed partition, a partition D also perforated IOO IIO

.so aszto form the compartmentfJ, a filtering y agent located between thev two perforated partitions, an-inlet-pipe entering thecompartment G and extending downwardxto approximately half itsheight, a faucet for WithldrawingY the vfiltered Water fromf-v the compartnient J, a blow-offpipe L connected with the bottom of the compartment G for receiving the accumulations of foreign matter, a stopcock M for permitting the outflow of water and accumulations from the pipe L, a pipe N connected with the bottom of the compartment H, and a stop-cock O located in said pipe for controlling the outflow therefrom, as and for the purpose set forth.

3. A water-filter consisting of a casing, a partition therein extending from the bottom upward with a small opening between the top and the upper end of the partition, an inlet and an outlet pipe, perforated partitions inclosing a filtering agent, and chambers formed by the several partitions.

4. In a water-filter, a casing, an inlet-pipe extending downwardly in the casing, a partition dividing the casing into two chambers communicating through an opening between the top of the partition and the top of the casing, perforated partitions embracing a filtering material and means for regulating the density of said filtering material.

In testimony whereof I have hereunto affixed my signature in the presence of two Subscribing witnesses CHARLES DIEHL.

Witnesses:

MARY E. HAMER, SAMUEL STUART. 

